What happens when two waves meet while they travel through the same medium

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

Atomic nuclei of almost all elements consist of